Identify the given number as "Rational", "Irrational", or "Not a real number". If the number is rational, give its exact value. If the number is irrational, give a decimal approximation to the nearest thousandth.
A. Irrational, 41.231
B. Rational, 2,890,000
C. Not a real number
D. Rational, 850
Answer: A
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Solve the problem.Anne and Nancy use a metal alloy that is 20% copper to make jewelry. How many ounces of a 14% alloy and a 24% alloy must be mixed to form 100 ounces of the desired alloy?
A. 30 at 14% and 70 at 24% B. 60 at 14% and 40 at 24% C. 40 at 14% and 60 at 24% D. 70 at 14% and 30 at 24%
Use Gaussian elimination or Gauss-Jordan elimination to solve the problem.A basketball fieldhouse seats 15,000. Courtside seats sell for $8, end zone for $7, and balcony for 
Total for a sell-out is 
If half the courtside and balcony and all end zone seats are sold, ticket sales total 
. How many of each type of seat are there?
A. 4000 courtside 3000 end zone 8000 balcony B. 3200 courtside 1800 end zone 10,000 balcony C. 3000 courtside 2000 end zone 10,000 balcony D. Cannot be determined
Use a Venn Diagram and the given information to determine the number of elements in the indicated region.n(U) = 97, n(A) = 45, n(B) = 30, n(C) = 35, n(A ? B) = 6, n(A ? C) = 5, 
Find 
A. 42 B. 5 C. 37 D. 3
Find the square root. Express the answer as a whole number or as a square root. Do not use a calculator.
A. 3 B. 21 C. 15 D. 8